The Chargers cornerback, often working opposite Shareece Wright in the base defense, also has taken reps in the slot at training camp. The veteran could move inside during nickel and dime situations, allowing him and first-round pick Jason Verrett to share a field. It is, however, no certainty at this stage, the cornerback rotation still being tinkered with before the Sept. 8 season opener.

Flowers, 28, worked in the slot at times with the Chiefs.

He'll potentially make his Chargers debut Friday in Seattle.

"You're more valuable when you can play multiple positions," said Flowers, who signed a one-year contract in June. "Last year, playing it in Kansas City familiarized it with me a little bit more. I feel I have some learning to do in there, but the more I learn, the more tricks of the trade I know, the more comfortable I feel being in there. We have so many defensive backs on this team, I feel like we give the opposing offenses a different look when I (and others) move around."

Flowers is not the only option inside.

Safety Marcus Gilchrist and cornerback Richard Marshall are among the others who have practiced there. Johnny Patrick, waived this offseason, began 2013 as the team's nickel corner. Gilchrist replaced him for the final five games, including two in the postseason, after Patrick had season-ending surgery.

Given the position's intricacies, it's unlikely he'll figure into the mix as a rookie, focusing instead on the outside. Verrett (shoulder) continues to wear a red jersey in practice and is not expected to play Friday. He appears on track for the season opener versus Arizona.